EP3570705A1 - Bureau assis-debout - Google Patents

Bureau assis-debout

Info

Publication number
EP3570705A1
EP3570705A1 EP18707219.4A EP18707219A EP3570705A1 EP 3570705 A1 EP3570705 A1 EP 3570705A1 EP 18707219 A EP18707219 A EP 18707219A EP 3570705 A1 EP3570705 A1 EP 3570705A1
Authority
EP
European Patent Office
Prior art keywords
cross member
sit
leg portion
table according
movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18707219.4A
Other languages
German (de)
English (en)
Other versions
EP3570705B1 (fr
Inventor
Manfred Neubauer
Michael Neubauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Neudoerfler Office Systems GmbH
Original Assignee
Neudoerfler Office Systems GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Neudoerfler Office Systems GmbH filed Critical Neudoerfler Office Systems GmbH
Publication of EP3570705A1 publication Critical patent/EP3570705A1/fr
Application granted granted Critical
Publication of EP3570705B1 publication Critical patent/EP3570705B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/20—Telescopic guides
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B13/00—Details of tables or desks
    • A47B13/02—Underframes
    • A47B13/06—Underframes of metal
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/02—Tables with tops of variable height with balancing device, e.g. by springs, by weight
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/12—Tables with tops of variable height with flexible height-adjusting means, e.g. rope, chain
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0051—Telescopic
    • A47B2200/0052—Telescopic with two telescopic parts

Definitions

  • the invention relates to a sit-stand table.
  • the seat-upright table according to the invention can be used as a seat-upright office work table.
  • sit-and-stand table refers to a table whose height can be adjusted quickly and comfortably for sitting or standing work, in particular office work.
  • sit-stand office work desks are far from being purchased as often as it would make sense for health reasons - and thus also indirectly for economic reasons.
  • the main reason for this is that sitting and standing office desks, when they meet the usual functional requirements, are mostly perceived as unattractive and expensive.
  • the beauty deficiency is usually that the table racks are relatively bulky for stability reasons, that for reasons of stability and complexity hardly four-legged racks are offered, but only tables with a central pillar or with two side cheeks, and that some tables need a visible electrical supply , The perceived high costs are caused by expensive components and complex operations during assembly.
  • the basic task of the invention is to propose a construction method for a four-legged sit-stand table whose legs and other frame parts can be designed to be similarly slender and graceful while complying with market standards in terms of function, stability and robustness Parts of tables to be used only when sitting.
  • the sitting / standing table has legs which each have a lower and an upper leg part which are designed as hollow profiles aligned in the vertical direction. are formed and telescopically telescopically in the vertical direction, wherein the cross-sectional area of the lower leg portion is covered by the cross-sectional area of the upper leg portion.
  • the upper leg portions are rigidly connected to a hollow, horizontally extending cross member and are common with this part of a rigid base frame, which is displaceable relative to the lower leg portions in height and to which a table top is attached above.
  • traction means - such as typically cables - driven, which extend into the cavities of the profiles and the cross member.
  • the sit-stand table has four legs.
  • the cross member is rigidly connected to the upper leg portions both via a side support which rigidly connects two upper leg portions and is rigidly connected to the cross member, as well as via a diagonal strut, which is rigidly connected directly to the respective upper leg portion and the cross member is, wherein the connection with the cross member is at a distance from the connection of the cross member with the side support.
  • the traction means for driving the telescopic movement between the lower and upper leg portion extend longitudinally through the associated with the upper leg portion diagonal strut, which is formed as a hollow profile, through.
  • Fig. 1 shows a sectional view with the cross member 2 parallel viewing direction, in particular on the cross member 2 of an exemplary inventive seat-floor table.
  • Fig. 2., Fig. 3 and Fig. 4 show in perspective view advantageously trained attachments 3, 4, 5 to the cross member of a seat-stand according to the invention.
  • Fig. 5 illustrates in side sectional view through parts of a table frame, the basic principle of the proposed drive, which applies equally for seat-up tables according to the invention as well as for sitting-standing tables according to the prior art.
  • Fig. 6 shows in an oblique view advantageous trained exemplary parts, which are intended to serve the drive height adjustment and are located inside a leg of a seat-stand according to the invention.
  • FIG. 7 shows a horizontal sectional view through an advantageously designed table leg of an exemplary seat-stand table according to the invention.
  • FIG. 8 shows the vertical sectional view indicated in FIG. 7 through the table leg of FIG. 7.
  • Fig. 9 shows in oblique view a side part of an exemplary seat-stand according to the invention.
  • FIG. 10 shows the detail surrounded by a circle in FIG. 9.
  • Fig. 11 and Fig. 12 show a horizontal sectional view of an advantageously formed transition region between a diagonal strut and the cross member of an exemplary embodiment of the invention sitting and standing table.
  • FIG. 13 shows the table frame of an exemplary inventive seat-and-floor table in a top view.
  • FIG. 14 shows the vertical sectional view indicated in FIG. 13 through a side support of the exemplary seat-stand table according to the invention of FIG. 13.
  • Fig. 15 illustrates, like Fig. 5 in side sectional view through parts of a table frame, the basic principle of the proposed drive, which applies equally to inventive seating and standing tables as well as sitting and standing tables according to the prior art.
  • FIG. 16 shows a plan view of an advantageous device for locking or releasing the height adjustment of an exemplary seat-stand table according to the invention.
  • Fig. 17 shows in side view a device for the condition-dependent automatic triggering of the locking of the height adjustment of an exemplary seat-stand according to the invention.
  • Fig. 1 to Fig. 4 are concerned with the proposal according to the invention in tables, which have a table top 1 and a metallic base frame with a running below the table top 1 in the horizontal direction hollow cross member 2, Anbautei- le 3, 4, 5 with the cross member 2 connect in a particularly advantageous manner.
  • the advantages are: cost-effective individual parts, positions can be flexibly varied, simplest operations during assembly.
  • This proposal according to the invention is applicable not only to sit-stand tables, but to all tables which have a hollow cross member below the table top.
  • the attachment 3, 4, 5 with the upper portion of the cross member 2 against movement towards the bottom and in the direction of a lateral part circumferential surface 6 of the cross member 2 towards positively hooked and the attachment 3, 4, 5 has a stop surface 7, with which he rests on the lateral lateral surface 6 on the lateral cross member 2 outside.
  • a table top 1, extending below a cross member 2 and an attachments 3 are shown.
  • the cross member 2 is part of the underframe of the table, connects left and right side parts of the base and is essentially a hollow metal profile, typically about a C-section of canted steel.
  • Such parts may be, for example, elastic springs, gas springs, motors, drive spindles, ropes, rollers, carriages and slide guides, motion dampers, etc.
  • the opening 8 is covered by a removable lid (not shown).
  • the table top 1 is - as always - either rigidly connected to the cross member 2, or so connected to the cross member 2, that it is only horizontally displaceable relative to this.
  • the attachment 3 has a hook extension 9, with which it is hooked from above with the upper part of the cross member 2 against movement on a lateral Operamantel measurements 6 of the cross member 2, and that the attachment 3 a stop surface. 7 has, with which it rests against the said lateral partial jacket surface 6 on the outside.
  • hook extension 9 is hooked with one of the lateral part circumferential surface 6 facing edge 10 of the cross member 2 overhead opening 8.
  • connection thus formed between the cross member 2 and attachment 3 is neither produced nor solvable, as long as the table top 1 as shown on the cross member 2.
  • the attachment or detachment of the attachment 3 on or from the cross member 2 namely requires that the attachment 3 to his located at the edge 10 hook extension 9 around in that height range is pivoted downwards or upwards, at which the table top 1 is located when it is properly mounted on the cross member 2.
  • the attachment 3 is not just a flat sheet, but it also extends somewhat parallel to the longitudinal direction of the cross member 2 and has two mutually aligned and aligned in the direction of the cross member 2 mutually spaced at a distance hook extensions 9. As a result, it is not pivotable about vertical axes in the mounted state relative to the cross member 2.
  • the attachment 3 outlined in FIGS. 1 and 2 is fixed to the cross member 2 only by the hook extensions 9 and the stop face 7.
  • the cross member 2 may at that part of the edge 10 of the opening 8, to which the attachment 3 is to be hooked, have a recess at the bottom of the hook extension 9 abuts and on the Flanks he comes against movement along the profile direction of the cross member 2 to the stop.
  • FIGS. 3 and 4 illustrate exemplary possibilities for this:
  • the attachment 4 according to FIG. 3 has two projections 11 which protrude from its intended stop surface 7.
  • the inventive and intended mating cross member 2 has at those points of that side part lateral surface 6, to which these projections 11 protrude when mounted fixture 4, recesses into which these projections protrude 1 1 and ideally engage something.
  • the attachment 5 has a tongue 12 which, as intended, together with the hook extensions 9 also required according to the invention delimits a kind of mouth which, with the attachment part 5 mounted on the suitable cross member 2, forms part of the cross member 2 from above and below under elastic prestressing clutching.
  • the tongue 12 may be formed as a whole as a spring tongue, or as indicated in the drawing, have a protruding from her separate spring tongue 13. If at the bottom of the matching cross member 2 at the point at which the spring tongue 13 comes to rest, a recess or depression is attached, the spring tongue 13 can engage in this recess or depression and thereby approximate the connection between the cross member 2 and attachment 5 make it completely insoluble.
  • the attachment 5 can be hooked thereby form-fitting with the lower portion of the cross member 2 against movement in the longitudinal direction of the cross member 2.
  • the cross member may also be formed as an extruded aluminum profile and have on its lateral surface a projecting profile wall or a groove on which an attachment is hooked according to the invention. It is important that the hook on the attachment is formed so that the attachment is only to be hooked by a rotational movement from above on the cross member 2 and only by a rotational movement upwards the entanglement is to be solved.
  • Fig. 5 and Fig. 6 are concerned with the inventive arrangement of rollers for height adjustment by means of traction means (typically rope) in a telescopic table leg.
  • traction means typically rope
  • the advantages are cost-effective parts and above all extremely simplified assembly even and especially when the legs are very slim.
  • the construction described with reference to Figures 5 and 6 is also advantageous and inventive when applied to a sit-and-stand table having fewer than four telescopic legs. If the seat-stand table has four legs, however, the construction is particularly valuable, because the higher number of legs, the working time savings by simple installation is very high, and because the legs are designed as slim as possible in four-legged tables, which otherwise the Mounting could be quite difficult.
  • Fig. 5 serves to understand the basic operation of a Buchschulunterectiven telescopic table leg - regardless of whether it is carried out according to the prior art or according to the present invention.
  • 5 shows a table frame 14, a rigidly connected upper leg part 15 and a lower leg part 16 telescopically arranged thereon.
  • the leg parts 15, 16 are vertically aligned hollow profiles, wherein the lower leg part 16 has a smaller cross-sectional area than the upper leg part 15 and is inserted into the upper leg portion 15 from below and is vertically displaceable in this.
  • Three rollers 17, 18, 19 are rotatably supported about a respective horizontal axis, wherein the axis of rotation relative to the upper leg portion 15 is held immovably.
  • Two rollers 17, 18 are arranged in the vicinity of the upper end of the upper leg portion 15.
  • the third, lower roller 19 is located in a space area encompassed by the lateral surface of the lower, inner leg part 16.
  • the connection of the lower roller 19 with the upper leg portion 15 via a support rod 20 which is indirectly rigidly connected to the upper leg portion 15, in the interior of the two leg portions 15, 16 parallel to these and from above into the lower leg portion 16 inside protrudes.
  • a traction means 21 leads in its course from the upper roller 17 and around the lower roller 19 below. If in the range of the table frame on this traction means 21 is pulled - and on the other traction means 22 is released - the lower leg portion 16 is moved relative to the upper leg portion 5 downwards, the table height adjustment is thus extended.
  • Pull on the pulling means 21 can also be used to brake or block the retraction of the lower leg part 16, which is driven by the weight of the upper part of the table including the load arranged thereon.
  • FIG. 6 shows a concrete exemplary embodiment according to the invention of the arrangement of the already mentioned rollers 17, 18, 19 on the already mentioned support rod 20.
  • the axis of the lower roller 19 is held by two holding bodies 24, which in the assembled state preferably in the axial direction of the lower roller 19 behind lie nander and together include the lower roller 19 in a direction parallel to the roller axis plane.
  • the gap between the edges of the tread of the lower roller 19 and said enclosure should be narrower than the cross-sectional dimension of the traction means 21 in the radial direction of the roller. This makes it impossible for the traction means 21 to drop from the lower roller 9 when the casing is present.
  • the lower roller 19 is jointly covered by two holding body 24 and not by a holding body alone, it is possible to first put the traction means 21 to the running surface of the lower roller 19 during assembly and only then the two holding body 24 on the roller 19th to attach and thus close the said enclosure.
  • the traction means need not be laboriously threaded through a gap between enclosure and role.
  • the assembly is very simple, because the holding body 24 can be assembled together by an axis-parallel movement and to the roller axis.
  • the support of the roller axle on the holding bodies is thus very robust and the two holding bodies can be formed equal to each other, whereby their production and the logistics associated with them are simplified.
  • connection between the holding bodies 24 and the support rod 20 is a plug-in connection which can be produced by relative movement of the holding bodies 24 in the direction parallel to the support bar 20 toward the lower end side of the support bar 20. This can be mounted quickly, the connector is secured in the assembled state by the tension of the pulling means 21 on the lower roller 19.
  • the two upper rollers 17, 18 are held on the upper end side of the support rod 20 in an analogous manner to the lower roller 19 on two further holding bodies 25, wherein the two upper rollers 17, 8 are arranged on a common axis.
  • the upper holding bodies 25 are connected in an analogous manner to the lower holding bodies 24 to the support bar 20 by a plug connection which, by a movement of the holding bodies 25 parallel to the direction of the support bar 20 on the upper end face of the support rod forth. is to deliver. This further simplifies assembly. As a support rod 20 so that simply a cut hollow profile can be used.
  • the lower holding bodies 24 are preferably designed as sliding blocks in the lower, inner leg part 16. This gives the construction very good stability with low material costs.
  • the holding body 24 must have surface areas 26, which are dimensioned so that they rest without play but largely without pressure on the inner circumferential surface of the formed as a hollow profile lower leg portion 16.
  • the upper holding body 25 are dimensioned so that they stuck play in the upper leg portion 15 by a press fit. As shown, this can be done by means of extensions 27, which are formed on the upper holding bodies 25 and radially projecting from these in the assembled state with respect to the axis of the support rod 20 and protrude to the inner lateral surface of the upper leg portion 15 and abut there under pressure. If - as outlined - the projections 27 frontally slightly tapered or rounded, so any existing small projection of its length is simply scraped during assembly during insertion of the upper holder body 25 in the upper leg portion 15 to the exact right size.
  • the support rod 20 and the holding bodies 24, 25 and the rollers 17, 18, 19 comprehensive assembly with the uppermost surface of the upper support body 25 is under pressure against an inner surface of the table frame 14 from below.
  • the compressive force required for this purpose is caused by the tension of the traction means 21 (FIG. 5) running around the lower roller 19.
  • FIGS. 7 and 8 are concerned with the arrangement according to the invention of sliding linings for sliding guidance of the telescoping leg parts 15, 16 of the telescopic table legs.
  • the advantages are cost-effective parts and above all a slim design with very good mechanical stability and permanently good function.
  • the design is particularly valuable in four-legged sit-stand tables, as the slim design is particularly important to them; but it is also advantageous and inventive at sit-stand tables with less than four legs.
  • Fig. 7 shows the essential parts for understanding the invention in cross-sectional view.
  • the cross-sectional area of the upper leg part 15, which is embodied, for example, as a hollow square profile, comprises the cross-sectional area of the lower leg part 16 designed to be a hollow square profile with a smaller cross-sectional area.
  • Parts 15, 16 do not touch each other, but between the two cross-sectional surfaces of the two leg portions 15, 16 extends around the profile of the lower leg portion 16 around an annular gap 28th
  • FIG. 8 shows, in the vertical sectional view indicated by arrows in FIG. 7, a lateral surface side of the upper leg part 15 and of the lower leg part 16 at the height overlapping area of the two leg parts 15, 16, with the leg parts 15, 16 extended to a maximum of telescopic.
  • the annular gap 28 between the leg parts 15, 16 is bridged at several points by sliding linings 29, 30, 31.
  • the slide linings 29, 30, 31 are strips provided with an adhesive layer on one side, made of a substantially good wear-resistant plastic.
  • the sliding linings 29, 30 are glued; on the inner circumferential surface of the upper leg portion 15, the sliding liners 31 are glued.
  • the sliding linings 31 belonging to the outer leg part 15 are located at the lowest height region of the outer leg part 15, while the sliding linings 29 belonging to the inner leg part 16 are located at the uppermost longitudinal region of the lower leg part 16.
  • the sliding linings 29, 30 belonging to the inner leg part 16 preferably extend at least approximately over those height range of the inner leg part 16, which is still encompassed by the outer leg part 15 in the case of telescopically maximally extended leg parts and not beyond this height range.
  • the sliding linings 29, 30 fastened to the inner leg part 16 overlaps that height range and because in the telescopic motion of the leg parts the sliding linings 29, 30 fastened to the inner leg part 16 do not coincide with those on the outer leg part 7, the sliding linings 31 fastened to the outer leg part 15 are arranged in a cross-sectional view (FIG. 7) at a distance from the sliding linings 29, 30 fastened to the inner leg part 16.
  • the two sliding linings are equally strong, namely together slightly stronger than the dimensional difference between the inner dimension of the upper (outer) Leg portion 15 and the outer dimension of the lower (inner) leg portion 16, but ideally significantly less than twice as strong as this dimensional difference.
  • These strong sliding linings are first glued to the inner leg part 16. Then, the cross-sectional dimension of the entirety of the lower leg portion 16 and sliding linings disposed thereon is reduced by milling individual sliding linings so that it fits well into the cavity of the upper (outer) leg portion 15 without a troublesome pressure.
  • Those sliding linings arranged on the lower leg part 16, the thickness of which has been reduced for adaptation by milling have the position number 30 in FIG. 7 and FIG.
  • the thickness (layer thickness) of the sliding pads 30 disposed at the lower end of the upper leg portion 15 is ideally slightly (eg, about 0.3 mm) less than the average thickness of the annular gap 28.
  • Fig. 9 and Fig. 10 are concerned with the inventive design of the side parts 32 of a substantially hollow metal profiles formed underframe of a sit-stand table with four telescopic legs, in which the length adjustment of the telescopic legs is driven.
  • the four-legged base of a sit-stand-table so stable form that it is not too strong sideways with high set table and light side impacts on the table top Vibrations came. Due to the construction according to the invention, it is now perfectly possible under economically reasonable conditions to design a sitting and standing table with four legs so that both the legs are slim, and that the base is very well stable against elastic deformation and vibration.
  • FIG. 9 and 10 is not only well applicable if the drive for height adjustment is based on ropes and elastic springs, but also in any other type of drive for height adjustment of a four-legged sit-stand table ,
  • the construction according to FIG. 9 and FIG. 10 can also be applied to tables with four legs as being advantageous and inventive, which are not height-adjustable at all.
  • Compared to tables according to the prior art can be found at the same good stability against elastic deformation and vibrations of the table frame, with a slimmer design of the frame parts Aus GmbH.
  • the side part 32 consists essentially of two upper leg parts 15, a side support 33 and two diagonal struts 34. All these parts are essentially sheet steel square hollow sections.
  • one end of the side support 33 is welded to each of the upper end of a leg portion 15 and one end of a diagonal brace 34 to a common corner portion 35.
  • the horizontally extending side support 33 and the two diagonal struts 34 together form a horizontal triangle, wherein, however, the sides formed by the two diagonal struts 34 do not quite protrude, so that instead of the local corner there is an open area.
  • a cross member Pis. 2 in Fig. 1
  • the cross member rests with its two end-side end portions on a respective connecting portion 36 to a side support 33 and with its vertical Mantle surfaces on the side facing away from the side members 33 end portions of the diagonal struts 34 abuts.
  • the invention resides in the special embodiment of the corner region 35, which is framed by a circle in FIG. 9 and is shown somewhat enlarged in FIG. 10 in comparison to FIG.
  • the ends of the upper leg part 15, the side support 33 and the diagonal brace 34, which project towards this corner region, are cut in such a way that the outer surfaces, which are still visible after joining, have no openings. At the externally visible lines of contact between said parts they are rigidly interconnected, typically welded together.
  • energy transmission means from the profile cavity of the diagonal brace 34 in the profile cavity of the leg portion 15 of the diagonal brace 34 covered in the assembled state shell surface part 37 is opened by an opening - the edge surface in Fig. 10, the position number 38 has.
  • the said energy transmission means serve to extend and retract the telescopic table legs; They may be traction means (ropes) or hydraulic hoses or electrical lines.
  • the energy transmission means are traction means (ropes)
  • 15 rollers position 17, 18 in FIG. 6 for their deflection are to be installed in the uppermost height region of the leg parts.
  • the axis of rotation of these rollers must then be aligned horizontally and normal to the longitudinal direction of the diagonal struts 34.
  • the lateral surface part 37 despite this breakthrough with at least one third, preferably half the width of that Lateral surface side of the leg part 15, of which the lateral surface part 37 is a part, without interruption up to the overhead lateral surface side of the side member 33 projects, which covers the upper end face of the leg part 15.
  • the lateral support 33 facing lateral surface side of the leg portion 15 has a lateral surface portion 39, which is at least a third, preferably half as wide as this lateral surface side, without interruption up to the overhead lateral surface side of the side support 33 projects and is directly rigidly connected to this - typically by welding.
  • leg portion 15 protrude to the overhead lateral surface side of the side member 33, but also those lateral surface sides, which at its upper longitudinal region by the diagonal strut
  • the lateral surface part 39 which is part of the lateral support 33 facing lateral surface side of the leg portion 15, comfortably with the upper lateral surface side of the side member 33 is welded, the lateral surface portion 39 at its upper edge a short projecting tongue 40, which intended in a the upper lateral surface side of the side member 33 located breakthrough 41 projects and rests against the lateral surfaces thereof.
  • Fig. 11 illustrates an advantageous arrangement of a traction means 21 (rope) deflecting roller 42 at the transition region between a diagonal brace 34 and the cross member 2 of a seat-standing table according to the invention, wherein the traction means 21 in the cavity formed as a hollow body parts diagonal brace 34 and cross member 2 runs.
  • the diagonal brace 34 connects the upper end of a leg part 15 to the cross member 2. That lateral lateral surface of the cross member 2, against which the diagonal brace 34 abuts, is in the part covered by the end face of the diagonal brace 34 an opening 43, through which the traction means 21 extends.
  • the axis of rotation of the roller 42 is arranged vertically aligned in the cavity of the diagonal brace 34, and that the running surface of the roller 42 projects into the cavity in the cross member 2.
  • the traction means 21 in the cross member 2 is very close to that side wall of the cross member 2, on which the diagonal brace 34 rests on the outside.
  • the cross member 2 can be made much narrower than would be possible if the roller 42 were mounted in the cross member 2. If it is necessary to redirect the traction means 21 in the cross member 2 once by 180 °, this can be done by means of a roller whose plane is parallel to said side wall of the, cross member 2, and thus in the width of the cross member 2 very little space stressed.
  • Fig. 12 illustrates an advantageous method of fixing the axle 44 of the roller 42 to the diagonal brace 34 according to the arrangement of Fig. 11.
  • the axle 44 is a pin which is formed of three circular cylindrical sections lying in the common axis, the middle section has a larger diameter than the two sections at the ends, wherein at the central portion of the roller 42 - if necessary, a plurality of rollers - is rotatably supported and the central portion is as long as the cavity in the diagonal brace 34 is high.
  • the axis 44 is vertically aligned, its lower part protrudes into a bore on the lower lateral surface of the diagonal brace 34, whose diameter is smaller than the diameter of the central portion.
  • the upper portion rests with a part of its lateral surface at the bottom of a recess 45 in the end face of the diagonal brace 34.
  • An edge of this recess 45 is formed as a slender finger 46 of the material of the diagonal brace 34 by a further recess next to the indentation 45 is formed from said end face.
  • the two indentations can be produced by removing edge surface areas of the cross member 2 forming sheet, most easily by laser cutting).
  • the finger 46 can be bent over towards the indentation 45, whereby the axle 44 is secured against sliding out of the indentation 45.
  • the holder for the axle 44 may be formed with such indentation 45 and such a finger 46.
  • the assembly method which is possible with this indentation 45, is extremely time and material saving.
  • the indentation 45 extends from its opening side into the non-raised angle range which the traction means 21 (FIG. 11) encloses on the roller 42. This will result in drove the axle 44 also held by the tension of the traction means 21 at the bottom of the indentation 45.
  • FIG. 13 and 14 illustrate an exemplary construction according to the invention for a table frame 47 with four leg parts, which has two side parts 32 and a cross member 2 and wherein the side parts 32 each consist of a side support 33, two diagonal struts 34 and a leg part 15 which rigidly connected to each other, are best welded together, as already described with reference to FIG. 9 and FIG.
  • a side part 32 and the cross member 2 are connected to each other in two ways, namely,
  • connection between the cross member 2 and the side members 32 is thus produced by the mating of two connectors and by attaching and tightening four screws.
  • FIG. 14 which is the sectional view indicated in FIG. 13, the tongues 54, 55, 56 protruding in the longitudinal direction of the cross member 2 can be provided on the cross member 2 as lateral extensions of the cross member 2 be educated.
  • FIGS. 15 to 17 Several advantageous related safety devices are explained with reference to FIGS. 15 to 17. These safety devices are advantageously applicable regardless of their number of legs in all sitting and standing tables and inventive, in which the drive of the lifting movement based on the fact that the drive energy comes from a prestressed elastic spring and is transmitted by traction means to the table legs.
  • FIG. 15 the frame 47, an upper leg part 5, a lower leg part 16, a spring 57 serving as an energy store, a coil spring, and a transmission mechanism are shown, among others, by the exemplarily sketched seat-upright table according to the invention.
  • the outlined exemplary transmission mechanism which comprises traction means 21, 22 (ropes), rollers 17, 18, 19, 58 and a relative to the frame 47 linearly displaceable slide 59, couples movement of one end of the spring 57 with relative movement between the rigid with the frame 47th
  • traction means 21, 22 ropes
  • rollers 17, 18, 19, 58 and a relative to the frame 47 linearly displaceable slide 59
  • a locking device which is typically operable by a handle and depending on the operation mobility of a part of the transmission mechanism 'blocks or releases and thus fixes the height adjustment or releases for adjustment.
  • the movement coupling between movement of the movable lower leg portion 16 and the pulley 61 via a cable 62, which is part of the transmission mechanism of movement between the spring 57 and Leg part 16 is guided in several turns around the spiral pulley 62, the carriage 59 and the movable end of the spring 57 connects and is held by the force exerted by the spring 57 tension under tension.
  • an engaging body 63 is part of a locking device which (not shown) through a Bowden cable 64 as a transmission means by a handle operable, and in response to the actuation movement of a part of the transmission mechanism * between the lower leg portions 16 and the height adjustment, the actuator 57 blocks or releases and thus fixes the height adjustment or releases it for adjustment.
  • the engagement body 63 is held on the table frame 47 guided linearly displaceable. Depending on its displacement position, it is with a respect to its displacement direction frontally mounted teeth 65 with the teeth 66 of the gear 60 into or out of engagement, whereby movement of the gear 60 is blocked or released.
  • the tooth flanks of the toothing 66 of the gear 60 which is coupled to the table height adjustment, with such high friction to the engaging teeth 65 of the engagement body 63 is formed, that then when through the Gear 60 large force is exerted on the engaging body 63, by friction of movement of the engagement body 63 away from the gear 60, is prevented, as long as the engagement body 63 is not pulled strong.
  • the second measure relates to the guide 68, which keeps the engagement body 63 guided relative to the frame 47, in particular those guide surfaces 69 which are aligned parallel to the possible sliding direction of the engagement body 63 and this against Support movement in other than the directions of movement.
  • these guide surfaces 69 are formed as friction surfaces relative to the engagement body 63. So you are not optimized for good lubricity, but on rather high static friction, for example, provided with a brake pad or made of materials with appropriate properties.
  • gearing 66 need not necessarily be attached to a gear on the central pulley 61, but more generally to a part which is motion coupled to the height adjustment movement of the sit-stand table.
  • the appropriate high friction between the engagement body 63 and the gear 60 is achieved relatively easily by the flanks of the toothing 66 of the gear in that area which is touched by the engagement body 63, are formed very steep, so all or almost at right angles to Alignment of the tooth order.
  • Fig. 15 is shown as a part of the transmission mechanism between the height adjustment driving spring 57 and the relatively moved by this relative to the frame 47 lower leg portions 16 guided on the table frame 47 in the cross member 2 movable carriage 59.
  • Attached to the carriage 59 are the ends of those pulling means 21, 22 (typically cables) which lead to the individual leg parts 15, 16, as well as the end of that cable 62 which, deflected by the pulley 61, is connected to the movable end of the spring 57 is.
  • At least one engagement body 71, 72 is arranged movably guided on the carriage 59 movably guided in the cross member 2, which is dependent on a state of the sit-stand table with an engagement formation 73 on the cross member 2 can be brought into engagement so that it blocks mobility of the carriage 59 relative to the cross member 2.
  • the carriage 59 rests on the lower surface of the cross member 2 and is slidably guided on this in the longitudinal direction of the cross member 2.
  • On the carriage 59 act parallel to the longitudinal direction of the cross member and opposite to each other aligned two forces 74, 75.
  • the one force 74 is caused by that drive spring (the example of FIG. 15, the spring 57), which intended upward movement of the table frame 47 (FIG. 15) drives against the remaining on the ground lower leg portions 16, or the reverse movement brakes.
  • the second force 74 is due to the weight forces of the table frame 47, the table top and the load thereon causes and is as described above via traction means 21, 22 (Fig. 1 5) and these deflecting rollers transmitted to the carriage 59.
  • the weight force force 75 acts directly on the carriage 59
  • the force resulting from the drive spring engages one end of an arm of the engagement body 71 formed as a two-armed lever.
  • the engagement body 71 is indirectly held on the carriage 59 via a one-armed further lever 76.
  • the engagement body 71 is thus pivotable relative to the carriage 59 both about the pivot axis of the one-armed lever 76, as well as about its own pivot axis relative to the one-armed lever 76. Both said pivot axes are horizontal, normal to the guide direction of the carriage 59 on the cross member. 2
  • the knee joint formed from the one-armed lever 76 and that arm of the engagement body 71 on which the force 74 engages is pulled by the force 74 in an extended, approximately horizontally oriented position, as long as the force 74 is the predominant action on the knee joint.
  • the tensile force of a tension spring 77 which is stretched between the carriage 59 directly and that arm of the engagement body 71, on which also the force 74 acts.
  • this upper surface of the cross member 2 is provided at the potential contact area with engagement body 71 with a running in the longitudinal direction of the cross member 2 teeth 78, in which optionally the one end engagement body 71 engages, and thus movement of the carriage 59 along the cross member 2 is blocked.
  • the tensile force of the tension spring 77 which said knee joint "seeks to bend" significantly weaker than the originating from the drive spring force 74 and as resulting from the weight load force 75, so that the knee joint is stretched and thus mobility of the carriage 59 is released .
  • the said knee joint closing tension spring 77 can relax and thus intended mobility of the carriage 59 relative to the cross member 2 - and thus block mobility of the lower leg portions 16 relative to the table frame.
  • Another engagement body 72 is pivotally supported on the carriage 59, wherein the pivot axis is aligned horizontally, normal to the guide direction of the carriage 59 on the cross member 2. Also, this engagement body is designed as a two-armed lever, but the two levers are very different in length and also very different heavy. The longer and heavier lever arm is when seated table is in the usual upright position approximately in a horizontal position in which it is held by its weight. At the second lever arm engages a tension spring which would pivot in the absence of other forces the engagement body 72 so that the longer lever arm would be pivoted to steeper position, and with a mounted at its free end tooth in the toothing 78 on the upper surface of the cross member 2 would snap.
  • the engagement formation 73 on the cross member 2 need not necessarily be a toothing. It could, for example, also be a friction surface to which, if appropriate, the engagement bodies are pressed.
  • the engagement body could be designed, for example, as a pivotable cam or spiral body.
  • this additional drive means may be an electric motor which typically drives the spindle of a spindle drive acting between the cross member 2 and the carriage 59. Since a spindle drive acts against self-locking against independent movement of the load, and since practically a maximum displacement speed is predetermined by the speed of the electric motor, and since the electric motor Tor is easy to switch on and off, a lot of safety and functionality is gained. Thus, the above-described engagement body can also be omitted. Compared to a design with electric drive and without any elastic spring as the drive source can be found with a weaker and less powerful electric motor Ausmaschine.
  • the additional drive means may also be a gas spring, which acts in addition to the elastic spring between the cross member 2 and the carriage 59.
  • a gas pressure spring which, in addition to providing a driving force, also offers the functions of a movement damping and an optional blocking of the mobility.
  • Such functions are quite common in the gas pressure springs available on the market.
  • safety and functionality can be gained so that individual or all of the previously described engagement body can also be omitted.
  • a weaker gas spring Aus GmbH which is cheaper than a stronger gas spring and the resulting sliding force between the retraction and extension not so much as in a stronger gas spring.

Landscapes

  • Tables And Desks Characterized By Structural Shape (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

La présente invention concerne un bureau assis-debout muni de quatre piétements télescopiques et dont les parties supérieures de piétement (15) sont raccordées rigidement à une traverse centrale (2), le déplacement d'un ressort élastique (57), étant couplé de manière mobile par des moyens de traction (21, 22), à un déplacement relatif entre les parties de piétement supérieures (15) et les parties de piétement inférieures (16). La traverse (2) est raccordée rigidement aux parties de piétement supérieures (15) individuelles respectivement à l'aide d'un longeron (33) mais aussi à l'aide d'une entretoise diagonale (34). Les moyens de traction (21, 22) traversent l'entretoise diagonale (34) qui est conçue sous la forme d'un profilé creux.
EP18707219.4A 2017-01-23 2018-01-23 Bureau assis-debout Active EP3570705B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT192017 2017-01-23
PCT/AT2018/000004 WO2018132851A1 (fr) 2017-01-23 2018-01-23 Bureau assis-debout

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EP3570705A1 true EP3570705A1 (fr) 2019-11-27
EP3570705B1 EP3570705B1 (fr) 2020-11-25

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EP (1) EP3570705B1 (fr)
WO (1) WO2018132851A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0511834U (ja) * 1991-07-29 1993-02-19 ヒロツクテクニカ株式会社 昇降テーブル
DE102015207351B4 (de) * 2015-04-22 2021-10-21 Veyhl Gmbh Höhenverstellbares Tischgestell sowie Tisch

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WO2018132851A1 (fr) 2018-07-26

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